[Amps] need a channel 11 VHF high band TX? tspa

[Steve Thompson]

John T. M. Lyles wrote:
> I am developing an RF amplifier system for the particle factory, with
> a nice new tetrode. However, I need a new driver, as I am replacing
> the original two tube system with a single tube driven by silicon-
> based technology. However, getting that stage hasn't been so easy. It
> operates on 201 MHz, close enough to VHF high band TV that I could
> use a transmitter, stripped of all the HDTV hardware (or NTSC for
> that matter). I need 25 kW of peak output, from a pulsed AB1 linear
> amplier. Its right at the point where MRF151G, MRF174, etc start to
> crap out of gain/power/bandwidth.

Philips and Thomson keep on going after Mot (or should we say M/ACom?) run
out of puff. You might also like to look at Semelab D1028/1029 which are
doing lots of business in DAB transmitters.

Wish I was free enough to offer to come over and do it for you.

Steve